Pith Number

pith:SEICRFPC

pith:2005:SEICRFPC3EAHSJHKWZQJLW2B3J

not attested not anchored not stored refs pending

A search for changing-look AGN in the Grossan catalog

F. Fiore, G. Matt, K. Iwasawa, M. Chiaberge, M. Guainazzi, R. Maiolino, S. Bianchi

arxiv:astro-ph/0507323 v1 · 2005-07-13 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SEICRFPC3EAHSJHKWZQJLW2B3J}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-04T16:52:44.469672Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91102895e2d9007924eab66095db41da43e2eef263d31f9bf426560f139eec47

Aliases

arxiv: astro-ph/0507323 · arxiv_version: astro-ph/0507323v1 · doi: 10.48550/arxiv.astro-ph/0507323 · pith_short_12: SEICRFPC3EAH · pith_short_16: SEICRFPC3EAHSJHK · pith_short_8: SEICRFPC

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/SEICRFPC3EAHSJHKWZQJLW2B3J \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 91102895e2d9007924eab66095db41da43e2eef263d31f9bf426560f139eec47

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2a034fe72e2649688c7a982df069a94eaaf4a0896dadc7664e79e8bd52d43504",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-07-13T15:36:50Z",
    "title_canon_sha256": "73c8ccad582dc1de506828cc98f740cb97496e3ced27c87c8c60b0a32af6df70"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0507323",
    "kind": "arxiv",
    "version": 1
  }
}